spotify-mouse-buttons.sh

#!/usr/bin/env bash

#
# Fix back and forward mouse buttons not working in Spotify on Linux
#
# Designed to be called from xbindkeys or a similar program:
#  * Bind the back button to "spotify-mouse-buttons.sh back"
#  * Bind the forward button to "spotify-mouse-buttons.sh forward"
#

# activate window under the mouse pointer
xdotool windowactivate $(xdotool getmouselocation | grep -o 'window:.*' | awk -F':' '{ print $2 }')

if [[ $1 == "back" ]]; then
	xvkbd -text "\[XF86Back]"
elif [[ $1 == "forward" ]]; then
	xvkbd -text "\[XF86Forward]"
fi

window="$(xprop -notype -id $(xdotool getactivewindow) 'WM_CLASS')"
if [[ $window == *"spotify"* ]]; then
	if [[ $1 == "back" ]]; then
		xte 'keydown Alt_L' 'key Left' 'keyup Alt_L'
	elif [[ $1 == "forward" ]]; then
		xte 'keydown Alt_L' 'key Right' 'keyup Alt_L'
	fi
fi